Category: COMPRESSION MOULD

What is compression mold

Compression molding, used for compression mold, is a molding method according to the characteristics of each stage in plastic curing reaction, and often used to produce high-quality composite parts. Compression molding materials are usually powder, granular or fibrous plastic, such as thermoplastic(LFT, GMT,LWRT), rubber and thermosetting plastic(SMC, BMC), Or new composites(SymaLITE,carbon fiber).

What is compression molding process?
Firstly, plastic is put into the cavity at the molding temperature, then close the mold, the material inside the cavity becomes a molten state under the high heat and high pressure, and then fills in the whole cavity. After curing, the product is ejected by ejector, repairing the flash. For compression molding, material, shape, compression, temperature, part thickness, cycle time must be considered. You must analyze the characteristics of the materials to ensure the product perfectly. Molding cycle time is something with material, part feature, mold design, temperature, pressure, etc.

What are the advantages and disadvantages of compression mold?
Advantages of compression mold:
(1)The loss of raw materials, the wear of the mold cavity is small, and the maintenance cost of the mold is low.
(2)It can be used to form large flat products. High dimensional accuracy, small shrinkage, low internal stress, the mechanical properties are relatively stable. The surface is smooth without secondary modification.
(3)The cost of the molding machine is lower, the mold structure is simpler, multiple cavities can be produced at lower cost, and the manufacturing cost is usually lower than that of the injection mold.

Disadvantages of compression mold:
(1)At present, it is not suitable for molding complex products with depressions, side slopes or small holes.
(2)Burrs must be trimmed manually
(3)For thermosetting plastics, when the molded products have slight defects, they are often unable to be recycled.

What is compression molding used for?
Compression molding is widely used in industry, agriculture, automotive industry, electricity, chemical industry, construction and other fields. MDC has developed compression molds such as spoiler templates, fenders, bumpers, front panel on trucks, engine covers, doors, bottom fenders, car ceilings, seat backs, electric boxes and bathroom door panel basin, etc.

Compression mould

compression moldcompression mold

What’s LWRT Mold?

As a leading LWRT Mold maker, we’re pleased to introduce new technology named LWRT for somebody else.

LWRT means Low weight reinforced thermoplastics. This type of material has been widely used in underbody shield of Automotive industry. both for Interior and exterior parts.

LWRT composite sheets are typically thermoformed into parts with a desired geometry.
Thermoforming is a stretch-forming process resulting in a reduction of the sheet’s original thickness. The deeper the cavity of the geometry is designed, the thinner the wall thickness of the final part will be.
The formability of the sheet material is its ability to form into parts with desired geometry without failure. The geometry of the parts varies according to different applications, and some
applications have a very complex geometric design. A good example of such applications is trunk trim, which has a deep-drawn, multi-cavity geometry.

The advantage of LWRT material would be:

1.weight reduction of at least 25% compared to traditional technologies

2.acoustic performance satisfaction without need for additional sound-absorbing elements to be welded or over-molded per piece.

MDC Mould, as a professional LWRT Mold maker, has produced many molds for our customers, such as Audi, BMW, Daimler, Jaguar, etc.

Please keep us in touch as below info, if you required.

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng Rd, Huangyan North Industrial estate, Taizhou, Zhejiang, china 318020

E-mail: [email protected];

What’s BMC Mould?

BMC mold is used a thermo plastic made up of a polymer resin, various inert fillers, fiber reinforcement, catalysts, stabilizers, and pigments that form a viscous. It is highly filled and reinforced with short fibers.

Depending on the end-use application, compounds are formulated to achieve tight dimensional control, flame resistance, high dielectric strength, corrosion and stain resistance and color stability. Its excellent flow characteristics make BMC mold well suited to a wide variety of applications requiring precision in detail and dimensions. The material is available in a wide variety of colors.

In addition, BMC mold is suitable for either compression molding or injection molding. BMC compressing molding is used to produce complex components such as electrical equipment, car components, housings for electrical appliances and tools, in large industrial volumes.

MDC Mould, as a professional BMC mold maker, is able to make BMC compression mold, as well as BMC injection mold with gate cutting.

If you’re interesting, please contact us as follows:

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou City, ZheJiang Province, china 318020

E-mail:[email protected]

BMC mould, Compression mould

What is GMT MOULD?

MDC specialized in compression mould, GMT mould is one kind of them .

so what is GMT ?

GMT is Glass Mat Reinforced Thermoplasitcs, a kind of sheet molding compound with fiber reinforced thermoplastic. It is produced on huge laminators, using a thermoplastic resin and one or more forms of reinforcement. The process yields a lightweight, partially consolidated, semifinished composite in sheet form. Most forms are produced to 1,300 mm to 1,400 mm widths. However, some newer forms are made to greater but proprietary widths. The sheet stock may be cut to size to suit placement in the tool for a specific application and also can incorporate a decorative or functional surface laminated to one side. GMT mould makes possible the production of large parts with low tooling costs and fast cycle times via compression molding. The potential for parts consolidation presents the opportunity to further reduce weight and cost.

What’s the advantage of GMT mould?

Utilization of regenerated; Low forming pressure; Long storage period; Short shaping cycle; High production efficiency

What’s the mostly application of GMT mold?

GMT mold is mostly used in Automotive and building&construction, chemical industry, packaging, sport equipment, etc.

Please keep in touch with us, when any doubts on GMT Mould.

Taizhou Huangyan MDC Mould&Plastic Co.,ltd

Add: No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou City, ZheJiang, China, 318020

E-mail:[email protected]

Tel:+86-576-84616076

GMT mould, Compression mould

GMT mold

Molding temperature of compression mould

The molding temperature depends on the curing system of the resin paste, the thickness of the product, the production efficiency, and the complexity of the structure of the product. The molding temperature must ensure the initiation of the curing system, the smooth progress of the crosslinking reaction, and complete curing.

In general, part having a large thickness should have a lower molding temperature than a thin-walled part, which prevents excessive heat produce heat build-up inside the thick part. If the thickness of the product is 25-32 mm, the molding temperature is 135-145 °C. Thinner part can be formed at 171 °C.

The increase of the molding temperature can shorten the corresponding curing time; conversely, when the molding temperature is lowered, the corresponding curing time needs to be extended. The molding temperature should be chosen between the fastest cure speed and the optimum molding conditions. It is generally believed that the SMC molding temperature is between 120 and 155 °C.

Mold detail about the compression mould, please don’t hesitate to keep us informed as below:

Taizhou HuangYan MDC Mould&Plastic Co.,ltd

Add:No.35-1 Qingfeng Rd, Huangyan north industrial estate, Taizhou city, ZheJiang Province, China,

T:+86-576-84616076;

F:+86-576-84616079

E-mail:[email protected];

Compression mould

SMC MOULD application

As a professional SMC Mould manufacturer in china, MDC mould can provide SMC mould and low volume quantities of SMC molding service with our customers.

SMC Mould process produces high strength, complex parts in a wide variety of sizes. The SMC material charge is manually or robotically placed in SMC mould; the heated mold halves are closed, pressure can be available applied from 500T till 4000T at MDC workshop, cycle time ranges from one to five minutes, depending on part size and thickness. Features such as ribs, bosses and inserts can be molded in.

In-mold coating(IMC) and vacuum system in SMC mould are available to improve surface paint ability, eliminating the need for primer.
Color compounds can be customized.

Please keep us informed, when any questions or requirements.

MDC Mould&Plastic Co.,ltd

No.35-1 Qingfend Rd, Huangyan North industrial estate, Taizhou city, Zhejiang, China 318020

T:+86-576-84616076; F:+86-576-84616079

E-mail:[email protected]

MDC mould, SMC mould

Underbody shield GMT Mold

MDC Mould, as a professional GMT Mold manufacturer, has collaborated with Daimler, Audi, VW, etc, as well as Tier one of car manufacturer.

Underbody shield in passenger car are mostly used GMT process, which is good protective in under-tray when driving. Now we’re honor to introduce GMT material for you as follows:

GMT is Glass Mat Reinforced Thermoplasitcs, a kind of sheet molding compound with fiber reinforced thermoplastic. It is produced on huge laminators, using a thermoplastic resin and one or more forms of reinforcement. The process yields a lightweight, partially consolidated, semifinished composite in sheet form. The sheet stock may be cut to size to suit placement in the tool for a specific application and also can incorporate a decorative or functional surface laminated to one side. GMT mould makes possible the production of large parts with low tooling costs and fast cycle times via compression molding. The potential for parts consolidation presents the opportunity to further reduce weight and cost.

What’s the advantage of GMT mould parts?

Utilization of regenerated; Low forming pressure; Long storage period; Short shaping cycle; High production efficiency

If you have any requirements, please keep in touch with us as below:

Taizhou HuangYan MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng Rd, Huangyan North industrial estate, Taizhou city, Zhejiang province, China 318020

E-mail:[email protected];

T:+86-576-84616076

MDC mould, GMT mould

SMC Mold in Heavy truck industry

MDC Mould, as a professional SMC Mold maker in china, provided SMC Mold as well as solution in heavy truck industry.

SMC (Sheet Molding Compound) works well for heavy duty truck parts, especially ones requiring complexity, strength, and impact resistance.  One of the projects MDC mould is working on is a heavy truck with these SMC parts, including roof spoiler and passenger’s truck fender extensions.  Each of these SMC parts is very complex in geometry because of its complex application. The following is a picture of one of the SMC fender extensions.

If a part needed this much complexity was manufactured with sheet metal, it would have many more pieces of the assembly and much more bracing.  Metal would also not have the resistance to corrosion and impact that is enjoyed by this composite part.

This fender extension with SMC material is from a truck that has been on the road since 1993, with over 270,000 miles on it.  So you can obviously see that composite material has a good application.

Please keep us informed when any new projects required for discussion.

MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng road, Huangyan North industrial estate, Taizhou city, Zhejiang, China 318020

T:+86-576-84616076; F:+86-576-84616079

E-mail:[email protected]

MDC mould, SMC mould

SMC mold in Agri industry

MDC Mould, as a professional SMC Mold maker in china, has already produced many kinds of SMC tractor mold for our customers, including John Deere, CNH, AGCO, etc.

With new material development in Agriculture industry, lots of tractor manufacturers are trying to use composite material instead of metal parts, such as SMC hood, SMC side panel, SMC Fender, chin, headlamp, etc. Meanwhile, we’re very honor to get worked with tractor manufacturers for the development. Honestly speaking, SMC molds that MDC produced have been satisfied by them, and assembly&testing are very successful. Now we’re discussing the possibility for development of new types, and they plan to use SMC molding parts for other accessories.

SMC tractor mold

If you’re interesting in SMC mold at any industries, please don’t hesitate to keep us in touch as below:

MDC Mould&Plastic Co.,ltd

No.35-1 Qingfeng Rd, Huangyan North Industrial estate, Taizhou City, ZheJiang Province, China 318020

T:+86-576-84616076; F:+86-576-84616079

E-mail:[email protected];

MDC mould, SMC mould

BMC MOLD

BMC named Bulk Moulding compound, is glass fiber reinforced thermoset polymer material used in compression molding, as well as injection molding, and transfer molding. Its application includes electrical, automotive, bathroom, etc.

MDC Mould, as a professional BMC mold maker in china, can make this type of mold with process of injection molding and compression molding. At this moment, MDC Mould has produced BMC mold in electrical industry, as well as bathroom industry and Automotive industry, such as BMC lamp housing, BMC washing basin, and BMC head lamp, etc.

BMC mold

Depending on end customer use, compounds are formulated to achieve tight dimensional control, flame resistance, high dielectric strength, corrosion and stain resistance and color stability. Its excellent flow characteristics make BMC well suited to a wide variety of applications requiring precision in detail and dimensions. The material is available in a wide variety of colors. Meanwhile, BMC injection mold is also available for MDC Mould, as we have 600T BMC injection machine for testing and small volume production.

Please keep us in touch, when any doubts:

MDC Mould&Plastic Co.,ltd

No.35-1 QingFeng Rd, Huangyan North Industrial estate, Taizhou City, ZheJiang Province, china 318020

Tel:+86-576-84616076; Fax:+86-576-84616079

E-mail:[email protected];

MDC mould,BMC mould, Compression mould